Shower curtain



FIG. 1 is a front elevated view of a shower curtain showing my new design;

FIG. 2 is a rear elevated view of the shower curtain; and,

FIG. 3 is a front perspective view of the shower curtain.

The broken lines depict the curtain rod and hangers used to support the shower curtain and form no part of the claimed design. 

The ornamental design for a shower curtain, as shown and described. 